watte



(N0 Model.)

' v H. E WAITE.

TELEEHONB RECEIVER.

" No. 292,602. Patente'daan. 29, 1882 WITNESSES Limognpmf. wamingmn. n.4;

" UNiTED STATES yPATENT `EEicEft HENRY wArrE, oE NEW YORK, N. Y., vAssieNon rro THE MOLECULAR TELEPHONE COMPANY, vor sAME PLACE.

TELEPHONE-RECEIVER.

SPECIFICATION forming part of Letters Patent No. 292,602, dated January 2%?, 1884.'

` Application led September 25, 1883., (No model.)

To LZ whom. it mctz concern,.-

Be it known that HENRY E. WAITE, of New York, county of New York, and State of New York, have invented a new and useful Improvement in rlelephone Beceivers, of which the-following is a full, clear, and exact description, reference being had to the aecompanying drawing, making part of this speci-A iication.

My invention relates to that class of re ceivers in which a bar-magnet is provided with a recurved arm or spring, forming an extension of the pole adjacent to and acting upon the diaf phragm, illustrated in Letters Patent granted to Lockwood and Bartlett .I une 15, 1880, No. 228,825; but in said patent the reeurved arm extended only sufficiently far to cause its end to simply overhang the end of the bar, terminating at that point, and it was there connected with or expanded in width to form a diaphragm, which was rigidly connected at its edges with the handle or body of the receiver. In my improvement the recurved arm is eX- tended, and its free end rests and is -adapted to slide upon a ledge or other suitable support in the head or body ofthe receiver, and centrally of its length and directly over the end of the bar-magnet the recurved portion of the arm has a spur which rests and is upheld in contact with the diaphragm, the arrangement being such as to adapt the free end of the recurved arm to slide on its support.

In the accompanying` drawing, which represents a section through a telephone-receiv er embracing my improvement, A represents the handle or body of a receiver, of any usual or suitable form, perforated or soeketed to inelose the magnet B, and provided with an enlarged ehambered portion forming the head for the reception of the coil O,surroundingthe end of the magnet, and for the accommodation of the diaphragm D'and ear-piece E, applied to the o pen end of said head in any usual or preferred manner. The end of the mag net B within the head and surrounded by the coil C is provided with an arm, b, which eX- tends laterally to near one side of the chamber in which the coilrests, and is there recurved, its reeurved portion or ,arm b crossing over and within inductive proximity to the end of the magnet B to the opposite side of the chamber from that where it connects with the portion b, and over aledge, a, or other suitable support on the side wall of the coil-` chamber, said end resting lightly upon and being supported by said ledge in such manner as to adapt it to slide thereon. Directly .over the end of the bar B, and at or near the `centergof the length of the arm b', which, by

preference, is made slightly arching over the magnet, as shown; said arm is provided with a spur, b2, which rests in contact with the diaph ragm or sound-board D. The arching form of the arm b serves to stiften said arm and to prevent its undue deflection andthe withdrawal of the point Zil from thediaphragmwithoutuni necessary weight of metal, and is therefore preferred, but it is not essential.

rIhediaphragm or sounding-board may either be made in the form of a disk coveringthe ene tire head of a receiver, or of a narrow strip of a width sufficient to cover merely the opening` in the .earpiece, as preferred, and the other parts of the receiver, asidefrom the recurved arm of the magnet and its support, maybe constructedin any usual or preferred manner.

By supporting the free end of the recurved arm ofthe magnet, as described, said end is adapted to slide longitudinally in the contraetion and elongation in the length of the arm,

due to molecular disturbance, or in thedeection or unbending of the recur-ved arm, caused by mass movement effected by the magnet, and the spuror point b2, participating in this movement, acts upon the surface of the diaphragm with a laterally-vibrating movement, causing a sligh-t rubbing or scratching of the diaphragm. I am aware that a magnet provided with a laterallyprojecting recurved arm or spring having its free end restingv in contact with the diaphragm has been employed in a'receiver, the same being shown in Letters Patent granted to Robert M. Lockwood November 1,V 1881, No. 249,064.- rIhis I do not claim; but,

Having now described my invention, I claim as new, iviz:

In a telephone-receiver,the combination,

with the sounding-board and the coil, of the In testimony whereof I have hereunto set magnet provided with the reeurved arm or my hand this 24th day of September, A. D. 1o spring', having its free end extended to over- 1883.

hang and slide upon a support at one side of 4 T ,v 4 n 5 the eoi1-ehznnber, said arm being' provided at HDB RX n' XY UTD or near the center of its length with n point 1 XVitilesses: resting in Contact with the sounding-board, C. H. liLxNliINSoN, substantially :is described. GEO. SAMUELS; 

